Movable weir with hinged top flap or head



Oct. 29, 1929.v H. ZIMMERMANN MOVABLE WEIR WITH HNGED TOP FLAP 0R HEAD Filed Nov. 13, 1926 WW2, IMM@ N .J 1 J :15.1; 1; a.

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Patented @et 29, i929 Hans zmivrnniuann, or Bentini-Pannen@ GERMANY MovABLE warn wrrn Hn'venn Tor FLA? on nnen y Application led November 13, 1926, Serial No. 148,282, and. n Germany November 27, '1925.

rl`he invention relates to movable weirs with hinged top, flaps or heads, and its object is to provide a simplified and improved construction of weir and actuating means.

5 It is known, for instance in sluice weirs with iaps for regulating ice Vand depth lof water, to actuate the flap by lifting means driven by the main operating mechanism of the weir, but it has been the practice to employ 10 separate means for lifting the sluice and the flap.

Now, in order not to impede the movement of the flap, the lifting means for'the sluice must act from behind (viewed in relation to ,15 the aperture of the Weir) the side'bracket serving to make a tight joint between the side of the flap and the pier slot in which the sluice is guided. Onvthe other hand, the lifting means for the flap has always beenarranged 20 in front of the side bracket, as the liap extended only as far as said bracket.

In contrast with known arrangements, the present invention provides a single yor common lifting means for the weir or sluice and 25 the flap, said means lying sheltered in the pier slot. At the same time, care is taken to prevent the flap from being loadedby the weight of the weir or sluice, although the lifting means acts directly on the flap. A

Constructional forms of the invention as applied to sluice weirs are illustrated by way of examples in the accompanying drawings to whichreference will now be made; Y

Fig. l is a section through the pillar `slot of a sluice weir (viewed from the headfl water side) intended to be lifted with the flap in the erect position. l

Fig. 2 is a cross section through the weir showing the fiap in the erect position.

Figsj and 4 represent a like cross section, but with the iiap lowered and in an intermediate position respectively'. f

Fig. 5 showsthe applicat'onof the inven- H tion to a weir intended to be lifted when the flap is let down.

Fig. 6 shows a modification' of the arrangement according to Fig. 5.

Referring firstto Figs. 1 4 it will be seen A that the sluice 1 carries, at each side, asectorlike bracket 2 which makes a'tight. lateral joint with the hinged Vheadjorv flap 3. At tached to the Hap 3 is 'an operating bar 4.' rlihis bar projects into lthe pier slot' above the side bracket 2 and is connected with chain lifting means 6. -An extension 7 is connected 55 to the end of the' said lifting means 6in such 1 a manner that the tension in it for llifting the sluice directly acts upon the-suspension pin 8, this extension being arranged in such a manner as not to prevent a' rotation of the 60 flap 3 around an axis which is not in align ment with the axis ofthe pin 8.r Saidlifting4 means `isl actuated through a .single ychain wheel 9 arrangedabove the pier slot, whereas hitherto a second actuatingwheel was usually required for actuating theflap. v This new arrangement works in the follow'- ing manner -Vz fthe sluice l is to be lifted out of the position of repose (Figli), the' actuating wheel 70. 9 is turned in 'a direction to shorten the lift# ing means 6, whereupon the'flap 3` is kfirst lifted into the erect position by reason of the connection of said means with the bar 4. During this movement the extension 7 of the lifting means turns freely upwards, the flap,l bar 4 sliding, for example, in al longitudinal slot 10 in said extension (seeFig. 4). The bar 4v describes an arc 12,'of Yradius R, about the rotational aXis l1. of the flap, andthe upper bearing surface of the extension ofthe lifting means 'describes an arc 13, of radius r, about the pin 8.6' The upper point lofintersection of these two arcs (see Figure 2) indicates the position at which, when attained, the tractive force of the lifting means 6 is transmitted,`through the member 7 to the suspension pin 8 and thereforeltothe s'lui'cel, which is notaifected while the Hap is being raised into the' erect position but is thereafter 'lifted upon shortening'the lifting means still further. After theliap 3 is moved to erectposition, it is subjected only to the tractive force resulting from the moment of the water pressure thereon, because there are no steps or theV like to prevent its freedom of adjustment (see Fig.2). y v Y As previously stated,lFig. 5 showsthe inv'e'ntion applied toV asluice weir intended to be lifted with the flap .letldo'wn ln this-conf.

Y struction, the portion 6 of the common liftingrmeans that depends from the other side of the actuating Wheel, is attached to the flap bar 4. Y Y

In the embodiment according to F ig. 6,

`which closely resembles that of Fig, 5, specially favourable conditions with regard to v the operating' speeds'and forces are obtained p the chain Wheel 9, one end of the chain `6 passes directly to the bar 4 of the flap 3 Where as .the other end is attachedto a fixed point f after being led round an idle pulley 1", rotati Y ably mounted on the free end of the member 7 jthat engages the pin 8,/

It the chain wheel 9 beturned, at a peripheralvelocity i), it raises or lowers the sluice 1 Vv(accordi ng to tliedirection of rotation) with avelocity On the otherhand, the portion 6 of the chain engaging the Hap-bar 4 Will lowergor'raise the -iiapwith a velocity e, that isto say,twice as fast. The actuating mechas nism is subjected to only half the moment of load, since, in View. of the ldistribution of the load between theV two portions of the chain,

the strainpon the chain is reduced, and .therefore also a chain Wheel of smaller diameter can be used, which means a still smaller load-v ins- Y Y Y Y The invention herein described offers, inter alia, the advantage that `the attachment pin' 8 can besodsplaced, independently of the rotational axisof the flap, as to come into i alignment with the perpendicular drawn from the centre of gravity S of the Asluice tangentially to the actuating Wheel v 9. With 1 this arrangement the sluice is not? subjected to theaction oflany tilting force.

' As the flap bar 4 projects into the slot 5f of thepier l5, it'is desirable (especially in the case of talliaps) to preventsaid bar from striking against the Wall 1.4 of the slot form-v ing'the trackway on the tail Water side. For

this reason it is'advisable to .slope the track 14V of the sluicejas shown in the figures;

Instead of a Iig-idmember A"1', there may be used a flexible means (for example, a rope or a chain) which is free to sagwhen relieved of Y. Y tension.

` 'Iheuse of a Vcommon-lifting Vmeans for'vthe 'y sluice and-the' iap leads to' thesimplest construction imaginable,andy therefore reduces the prime cost, the expense of attendance and the upkeep of theflifting means,- especially :when chains are employed..V NopaIt-Of the lifting means is exposed. to the iowing water.

Ovvingto the Workingpoint ofthe lifting i meansbeing at theou'ter edge'offthe Hap, a

considerable reserve of :power is available, es-

' pecially when the flapfis. letdogwn.` The axis Vof theiiap doesnot rrequire to pass throughl the side bracket and transmit torsional stresses; the position of the lifting means yfor the sluice is independent of the axis of the flap; and the tractive connection betweenthe lifting means and the sluice is of an extremely simple character. f

With the embodiment according to Fig. 6,

Vtechnical Working advantages are obtained in conjunction With economies in the actuating mechanism. f High speeds are obtained in .respect Vof the fiap, Without the necessity for Hincreasing the speed of the driving motor or providing acountershaft- Y e Obviously the chain 6 may in the construction described bereplaced by ropes 0r other flexible lifting agents. Y

Having now particularly described andascertained the nature of my said invention and in what manner the same is to be performed, I declare that what I claim is 1;. A movable Weir with hinged top flap, having common means including a driven Y sprocket and a chain fastened at one end and margin of the flapy and having an extension thereof attached to the Weir, and gearing for Winding saidmember so as to turn the iiapV and lift the Weir on continued Winding after the flap has turned to limited position. Y

3. A movable Weir with Vhinged top flap, having common means for lifting thefweir and turning the flap, said means comprising a flexible member fastened at. one end and. having its other end attached directlyto the flap at each side vof they Weir-by fastening means on the upper margin of the flap, a link forming an extension of said ilexible'member pivot-ally attachedrto the Weir, and means for reeling said member to turn the iiapV and lift the Weir after theflap has reached its limit of turn movement. f

4. A movable Weir With hinged topv flap having common means for lifting the Weir and turning the flap, said means comprising aV flexible member at each side of the Weir secured at one'end and attached at its other end directly to the flap byffastening means onf-the upper margin of thelatter, ai link forming an extension ofthe flexiblemember i.25

pivotally attached tothe Weir at a point eccentric with respect'to the turning axis of the flap, andmeans for reelingsaid member -to turn the flap and lift'theiveir after the flap hasreached its limit of turn movement. f

y 5. A movable Weir withl hingedtop flap,

when the latter is raised, and means .for reel ing or winding said member for turning the flap and lifting the weirafter the flap has reached its limit of turn movement.

6. In a movable weir, the combinationvof a sluice mounted for sliding movement between slotted piers, a top flap hinged to the sluice, side brackets on the sluice making tight lateral joints with said flap, and means for turning the flap and lifting the sluice after the flap has reached a limit of niovement comprising a flexible member atv each side of the weir having one end fastened and its other end attached directly to the flap by fastening means on the upper margin of the latter projecting into the slots of the pier above said side brackets, said Aflexible member having an extension attached to the sluice at a point eccentric to its attachment with Athe flap, together with means for reelingltlie flexible member in opposite directions.

7 In a movable weir, the combination of a sluice mounted for sliding movement between slotted piers, a top flap hinged to the sluice, side brackets on the sluice making tight lateral joints with the flap, and means for lifting the sluice and turning the flapy comprising a flexible member attached directly to the flap at each side of the weir by fastening means on the upper margin of the flap projecting into the slots of the piers above said side brackets and said means having an extension pivotally attached to the sluice for lifting the latter after the flap is turned, together with means for reeling the flexible member.

8. In a movable weir, the combination of a sluice mounted for sliding movement betweenr slotted piers, a top flap hingedto the Y sluice, side brackets on" the sluice making tightlateral oints with the flap, and meansA at each side of the weir adapted to coordinately lift t-lie sluice and turn the flap, said means comprising a member on the flap projecting into the pier slot above the side bracket, flexible lifting means having attachment to said member, a suspension pin on the A sluice projecting into the pierl slot-and an extension of said lifting means attached to said pin.

9. In a movable weir, Vthe combination of a sluice mounted for sliding movement be` tween the slotted piers, a top flap hinged to the sluice, side brackets on the sluicekmaking tight lateral joints with the flap, and means at eachside of the sluiceadapted commonly to.

lift theweir andturn theflap, said means comprising a pin projecting from the flap into the lpier ,slot above the side bracket, a"

link having a slottede'nd iii-engagement with the*y pin and theopposite end pivotally attached tothe sluice, ailexible lifting member having-attachment to the pin, and means for reeling said'memben, c

`10. In a .movable weir, the combination of twofpiers each provided with a'slot having an inclined side wall, a sluice mounted for slidable movement between said piers, a top flap hinged to'the sluice andY adapted to tilt downward toward said rin clined walls, side brackets on Vthe sluice making tight lateral joints with the flap, and means at each side of the weir for cooidinately lifting the sluice and turiiingthe flap.

11. In a movable weir, the combination of two piers each provided with a slot having an inclined side wall, a sluice mounted for slidable movement between said piers, a top flap hinged to the sluice and adapted to tilt downward toward said inclined walls, side brackets on the sluice making tight lateral joints with the flap, and means at each side of the weir for commonly tiltingl the `sluice and turning the flap, said means including a j member on the flap projecting into the pier slot above the side bracket, flexible lifting means having end attachment to said member, and an extension of said lifting means attached to the sluice.

12. In a movable weir, the combination of two piers each provided with a slot having an inclined side wall, a sluice mounted for slidable movement between said piers, a top flap hinged to the sluice and adapted to tilt downward toward said inclined walls, 'side brackets on the sluicemaking tight lateral joints with the flap, and means at each side of the weir for commonly lifting 'the sluice and turning the flap, said'means, including a memberon the flap projecting into the pier slot above the side bracket, flexible lifting means having attachment to said member, a suspension pin on the sluice projecting into Vthe pier slot, andan extension ofy said lifting sluice with hinged top flap adapted to tilting movement, the combination of actuating means, flexiblelifting means at each end of the weir acted upon by said actuating means l to cominonlyfact upon said sluice and flap for sliding the former and tilting thelatter, each of said lifting means having one end fixed and its other end connected directly to said flap for raising and loweringthe latter, together with a block having linky connection with said sluice over which an intermediate portioiiof said flexible means passes for causingrr said sluice to slide upland downaS-said'- flap is raised and lowered.

y 14. In a movable Weirembodying a, slidingg f v sluice with hingedtopflap adaptedtojtilting movement thereon, means for lifting; the sluioe and turning the flap onY its axis v60H1-,v

prisingfin combination, Hexible members. attached directly to the' flap at opposite sides v of the,l Weir and having extensionsfpirotanlly attached Vto the sluice at. opposite points v eccentric totheaxis ofthe flap, ind Ineens simultaneously actu-ating said flexible members so-as to tilt the lapend slide the slui'oe after the flap is tilted.V

In testimonywhereofV I halvejaffix'ed'iny,

HANS' ZIMMERMANN.

slgnature. 

